2026-03-06T05:44:34Z https://repo.qst.go.jp/oai

oai:repo.qst.go.jp:00047901 2023-05-15T23:34:16Z 1

Characteristics of nickel and iron diffusion in molten lead - 17 lithium alloy Gao, Yun Takahashi, Minoru Nomura, Masao Nozawa, Takashi 野澤 貴史 metadata only access Diffusion characteristics of transition metals – nickel (Ni) and iron (Fe) diffusion in the molten lead–17lithium (Pb–17Li) were investigated experimentally under the argon atmosphere in the temperature range from 300 ◦C to 600 ◦C by using the long capillary method. The axial concentration distributions of Ni and Fe in Pb–17Li specimens were measured by ICP-MS, and the diffusion coefficients of Ni and Fe were determined based on the Fick’s second law. The Arrhenius correlations of diffusion coeffi- cient of Ni and Fe were obtained as DNi =7.37 × 10−5exp (−4.66 × 103/RT) (300 ◦C ≤ T ≤ 450 ◦C) [cm2/s], DFe =3.21 × 10−4exp (−2.64 × 104/RT) (450 ◦C ≤ T ≤ 600 ◦C) [cm2/s]. It is found that the diffusion coeffi- cient of Ni is one order magnitude bigger than that of Fe in Pb–17Li. The diffusion coefficient of Fe in Pb–17Li was approximately in the same order as that in lead–bismuth eutectic reported by authors. Elsevier 2015-11 eng journal article https://repo.qst.go.jp/records/47901 10.1016/j.fusengdes.2015.11.011 Fusion Engineering and Design 109/111 1604 1608